Compressing-machine.



T.LUND. COMPRESSING MACHINE.

APPLICATION FILED JANHS, 1909.

Patented Mar. 9, 1915.

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'rrror/res LUND, or" BEVERLY, iissAci-rrisnrrs, nssrenoaro UNITED SHOE MACHINERY COMPANY, or rnrnnsorr, new JERSEY, A conronnrion or NEW JERSEY.

GOMPRESSING-MACHINE.

Patented Mar. 8?, 1915.

Application filed. January 6, 1989. Serial No.47l),965.

To all whom it may concern:

Be it known that I, THOMAS LUND, a citizen of the United States, residing at Beverly, in the county of Essex and Statccof Massachusetts, have invented certain Improvements in Compressing-Machines, of which the. following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for compressing articles of leather. The machine herein illustrated. constituting the preferred embodiment of the invention is intended more particularly for molding shoes hereinafter mentioned.

, In making shoes of certain kinds it is a common ractice to form the heel in part of a heel blank which tapers to a thin edge at the breast from a point a short distance in the rear of the breast edge. A wellknown example of this work is found in the production of spring heel shoes wherein a heel blank beveled at the breast edge is commonly inserted between the outersole and the insole to give the heel the desired height. Heel blanks which, have a thin breastfledge are also used in making shoes which are similar to spring heel shoes in that the heels thereof are of the same conblanks for use in heels of certain classes of tour viewed from [the side of the shoe as that of the heels of spring heel shoes,

although the. heel blank is secured to the outside of the outersole rather than the in-' side as in spring heel work. Heel blanks of the contour referred to have beenheretofore produced by beveling lifts to the desired shape in a skiving operation.

blank from the mold with the ordinary feeding and ejectingmechanism.

A feature of. the present invention consists .in a feeding and ejecting device constructed and arranged to insure that the compressed blank will be properly removed from the mold.' The invention is preferably embodied in the form of a device arranged to enter the mold and to engage and eject the compressed blank therefrom; and in the present application a construction has been selected, for the purpose of illustration, which comprises spring pressed pins mounted in the forward ends of the fingers of the feed slide and arranged to enter the mold and engage the compressed blank therein.

Other features of the invention will be hereinafter described.

In the drawings,-Figure 1 is a view in side elevation with parts in vertical section of a portion of a compressing machine constituting one embodiment of the invention; Fig. 2 is a perspective view of some of the parts shown in Fig. 1; Fig. 3 illustrates a blank before being operated upon by the machine, and Fig. 4: shows a molded blank.

The present embodiment of the invention is shown applied to a heel compressing machine of the type illustrated in U. S. Letters Patent 776,787, granted Dec. 6, 1904, to S. D. Leland, to which reference may be had for a disclosure of suitable mechanism for actuating the mold parts to be described. I

The parts shown herein comprise side dies 2 and a breast die 4 interconnected for simultaneous movement against the edges of a blank, as in the machine of the patent i referred to. .The bottom of the die cavity is formed by a plate 6 whichis raised and lowered to permit the insertion and removal of a blank as in the patented machine. The plate 6 is provided at its breast portion with a beveled surface 8 of uniform width from side to side of the plate. The top surface of the blank is'engaged by a follower 10 which is sustained in stationary position, the parts constituting the sides and bottom of the die cavity being mounted upon a head which is arranged for vertical movement to cause the blank to be subjected to vertical pressure between the bottom plate 6 and the'follower 10. The follower 10 is provided at its breast portion with a depending lip 12 which is of substantially the same width from side to side of the follower as the beveled surface 8 upon the plate 6. The acting surface of the lip 12 is shown as in: clined at a slightly sharper angle than the corresponding surface of the bottom plate 6.

The inclined surfaceiof the follower merges curve so that the portion'of the blank which lies at. the, junction of the two surfaces is rounded as indicated in Fig. 4:.

Afeed slide 14: arranged for movement over the upper surface of the breast die f longitudinally of the die cavity is provided,

, as in the machine shown in the patent. re-- ferred to. The slide 14 in its forward movement shoves the previously compressed blank from the top of the plate 6 and places a new blank in positionupon said plate. To insure v that the compressed blank will be properly removed from the plate 6 by the feed slide, said slide as shown is provided with'a spring-pressed; pin 16 atthe forward. end of each of the members constitutingthe fingers of the: slide. a The spring-pressed pins 16 as they pass over. the inner edge of the breast die are forced by the springs below the upper surface of the breast die and their lower ends 'engagethe beveled portion of the compressed blank and in'the forward 7 movement of the slide said pins shovethe n compressed blank from the plate 6. The lower ends'of the pins are beveled at the rear so that in the rearward "movement of the feed slide 14 they are forced above the breast die 4-by engagement. with the inner edge of said die. V v a f The blank'before being operated upon by the machine may comprise two lifts secured together, the breast portionof the blank being beveled so that it tapers to a thin edge, as will appear from Fig. '3. It

willbe understood, however, that the invention is not limited to use in connectionwith blanks composedof, two lifts and that fur: thermore it is not necessary in the use 'of the invention to-bevel the breast edge of the blank before it. is presented to the com-press' inginaehine. .An unbeveled blank of substantially uniform thickness from 'breast'to "rear may be used, if desired;

I In the operation of the mechanism shown, a blank such. as is shown in Fig. 3 having been placed'upon the plate v6 grain side uppermost bythefeed slide 1a, the plate 6 drops to the bottom of the die cavity at the beginning of the upward movement of the head and carries the blank into positionbetween the -side dies andbreast die. As

the'head rises the side dies and breastjdie close-,inwardlyupon the blank and subject it to lateral'pressure. In the further upward movement of thehead the blank is engaged by the follower 10,.the lip 12 coming in contact with the breast edge of the blank before the blank is engagedby the remaino ing portion of the follower. The blank is thus firstsubjected torlateral pressure and thereafter to vertical pressure: wherebyit is condensed and solidified and is given the contour shown-in-Fig. 4. In the downward movement of the head the-plate 6 is raised to bring the compressed blank to the top of the die cavity from which it is removed by thefeed slide 1a in the further downward movement of the head.

Where the blanks to be operated upon are subjected to a preliminary beveling operation it is preferred that the blank be beveled upon the flesh side rather than the grain side. This permits a compressed blank to have a continuous grain surface upon its lower'side as indicated in-Fig. 4. This isof advantage in that the blank is made more :dense and firm than would be the case if'it were beveled upon the. grain side. This featureis particularly desirable where the blank is to be applied to the outside of the outersole and constitutes the tread surface of the heel. It'will be seen that in this location itjpermits the tread surface of the shoe to be of the grain side of 7 the leather 'over its entire area.

. It will be observed that by the use of the present invention a blank of the nature described may be made much more denseand firm than if it were not subjected to; the operation of a compressing machine; This is ofa'dvantage whether the blank constitutes the tread surface of the wheel or be.

placed beneath the outersole. Where'the the outersole as it insures that'the tapered breast portion willflie in close engagement withthe surface of the outersole.

Having described my invention, what ,claim as new and desireto'secure by Letters vPatent of the United Statesiszf 1. In a'compressing mach1ne,.thecombi- V I nation of a mold adapted to receive a blank to be compressed, means for feeding a blank to said mold, and means arranged'to enter the mold-cavity, for removing a compressed feeding movement.

2. In a compressing. machine thecombination of a mold adapted to receive ablank to be compressed, means for feeding a blank to said. mold, and means, carried by said "blank from the mold inthe direction of the feeding means and arrangedto enter the mold cavity, for removmg a compressed blank from the mold during the feeding movement. a w a 8. In a compressing machine the combinationof a mold adapted to receive a blank to be-compressed, feeding mechanism, comprising a pair of fingers, for feedinga blank 10 pins carried by to said mold, and yielding blank engaging devices carried by said finger-sand arranged to engage with and remove a compressed blank from the mold.

enter the mold and push the compressed blank therefrom.

In testimony tWo subscribing Witnesses.

THOMAS LUN D. Witnesses:

WILLIAM ARTH R BOND, CHESTER EUGEN RoeERs.

Copies of this patent may he ohtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. a I

whereof I have signed my name to this specification in the presence of 

